94 lines
3.0 KiB
Swift
94 lines
3.0 KiB
Swift
// Copyright (c) 2016 Peter Siegesmund <peter.siegesmund@icloud.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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import Foundation
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/**
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Completion is a wrapper for DDP callbacks that ensures that callbacks are executed
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on the same queue on which the original method was called. If the current queue is
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not available, execution defaults to the main queue.
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*/
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public struct Completion {
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var executionQueue:OperationQueue? = OperationQueue.current
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var methodCallback:DDPMethodCallback?
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var connectedCallback:DDPConnectedCallback?
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var callback:DDPCallback?
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init(methodCallback:@escaping DDPMethodCallback) {
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self.methodCallback = methodCallback
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}
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init(connectedCallback:@escaping DDPConnectedCallback) {
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self.connectedCallback = connectedCallback
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}
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init(callback:@escaping DDPCallback) {
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self.callback = callback
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}
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func execute(_ result:Any?, error:DDPError?) {
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if let callback = methodCallback {
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if let queue = executionQueue {
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queue.addOperation() {
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callback(result, error)
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}
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} else {
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OperationQueue.main.addOperation() {
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callback(result, error)
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}
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}
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}
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}
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func execute(_ session:String) {
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if let callback = connectedCallback {
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if let queue = executionQueue {
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queue.addOperation() {
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callback(session)
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}
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} else {
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OperationQueue.main.addOperation() {
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callback(session)
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}
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}
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}
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}
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func execute() {
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if let callback = self.callback {
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if let queue = executionQueue {
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queue.addOperation() {
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callback()
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}
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} else {
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OperationQueue.main.addOperation() {
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callback()
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}
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}
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}
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}
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}
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